Polls have now opened to voters for the historic EU referendum.
More than 46m people are registered to vote - the UK's largest electorate ever. More than two million people have joined the electoral roll since December, the Electoral Commission said last night, despite problems with the voter registration system as the deadline approached.
Of the 46.5m people eligible to vote, 83.7 per cent are in England, while Scotland has 8.5 per cent of the votes, and Wales has 4.8 per cent. Northern Ireland has 2.7 per cent - while Gibraltar, a UK outpost, has 0.05 per cent of the electorate.
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Polls will close at 10pm, with the first results beginning to roll in around 12.30am tomorrow.
Last night David Cameron paid tribute to his campaign, tweeting that he was "proud of everyone at Stronger In".
"They have fought a great campaign. The UK has a great future if we #VoteRemain tomorrow."
Meanwhile, the final polls suggested Remain had a narrow lead, with 51 per cent of the vote, compared with 49 per cent for Leave.
That pushed the pound up against the dollar, from $1.47 to above $1.48 - although this morning it had dipped again, to $1.4764.